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South Whittier CDP, CA
ZIP 90604 — Economy & Jobs
Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.
Upper Middle ClassLow Snow Area
Income, employment, industries, and economic trends
Income & Economy in South Whittier CDP, CA (90604)
Median Income
$101,104
*Adjusted for inflation (2023 dollars)
IRS Net Migration
+1,938
Wealth inflow
Population
39,378
Unemployment
3.3%
0.4pp below US avg
IRS migration statistics show a net inflow of about 1,938 for ZIP 90604 (South Whittier CDP, CA) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.
Historical Trends in 90604 (2020–Present)
Since 2020, population declined 2.9%, median income rose 10.2% (inflation-adjusted), home values increased 3.6%.
Economy & Jobs key statistics
| Income & Jobs | |
|---|---|
| Median household income | $101,104 |
| Unemployment | 3.3% |
| Establishments | 308 |
| Employees | 1,853 |